Kernel is always service 0 Owner of //services/[number] is owner of service Owner of //processes/[number] is owner of process Kernel services owned by root Access to kernel services restricted to root owned services API backbone calls kernel and asks for list of service id's for a service type, alone with a friendly name for each and a longer description (for using in a UI) e.g., asking for "filesystem" services gives list pointed to by //processes/[process id]/import/filesystem/ //services/0/export/ //services/123/export/filesystem/0 //services/123/import/filesystem/0 Environment variable service Exec Samba service nfs service network service sound mixer webcam kernel services user auth server